[bruce511]

Docs can include pictures, even rudimentary ones made in the simplest drawing tools.

Programmers don't like writing docs because it's work, not fun like having code. In some companies that's "someone else's job" which is terrible.

When youre young you think you'll remember every line of code you ever wrote. (Spoiler alert, over a 40 year career you'll write a LOT of code).

Code is just code. Docs make the code usable. I get paid when the code is used (well, purchased) so my incentives were clear. Plus it makes customer support a Lot easier.